I searched the web to get an answer, but couldn't find one. Does this option do anything at all? I installed Tomato and reduced this to 1 mw, applied the change, and rebooted the router. Using my computer and cell phone, I monitored the power from the router and there was absolutely no difference.

I know too much power creates heat and noise and may decrease performance, but shouldn't lowering the power have an effect on the power coming from the router? I had the same experience with ddwrt.

I'm using a new Asus RT-N16.

PS. Is it just me or is the "Sign In" broken on this site? I signed up and confirmed my email, but I can't sign in.

For some routers/chipsets, the transmit power option has no effect. I have read on some forums that some people report that the Transmit Power option doesn't do anything while in tomato, but does work in DD-WRT…and vice versa…it varies from model to model..and not everyone has the same experience even on the same hardware.